@Article{CiCP-24-234,
author = {},
title = {Shape Memory of Elastic Capsules Under the Effect of Spontaneous Shape},
journal = {Communications in Computational Physics},
year = {2018},
volume = {24},
number = {1},
pages = {234--252},
abstract = {<p style="text-align: justify;">Red blood cells can recover their resting shape after having been deformed
by shear flow. Their rims are always formed by the same part of the membranes, and
the cells are said to have shape memory. Modeled as two-dimensional elastic capsules,
their recovery motion and shape memory is studied, mainly focused on the effect of the
spontaneous shape. The fluid-structure interaction is modeled using immersed boundary
method. Based on the simulations, the resting shapes of capsules are obtained and
the area ratio of spontaneous shape is found to play an important role. After remove
of shear flow, all capsules can recover their resting shapes, while only capsules with
noncircular spontaneous shapes present shape memory. As the spontaneous shape
approaches a circle but still noncircular, the capsule spends more time on recovery
process. We consider how these capsules deform depending on the membrane bending
energy, and find that the relaxation speed is positive correlated to the range of
values of dimensionless bending energy. These results may help to identify different
spontaneous shapes for capsules especially RBCs through future experiments.</p>},
issn = {1991-7120},
doi = {https://doi.org/10.4208/cicp.OA-2017-0075},
url = {http://global-sci.org/intro/article_detail/cicp/10935.html}
}